I. Body materials: made of FC30 casting for all of Hardy ‘sdrilling /tapping head unit and boring & milling spindle unitwhich are bored before processed of stress reliving .

II. The material of spindle shaft is made of Alloy Steel andunder process of heat-treatment and assemble with NSK or SKFbearings.

III. Test and passed by it’s maximum RPM before leave factory tokeep in high-precision ;turning temperature lower then20??????.

IV. Specially suitable for factories who are combining specialpurpose machine units or other parts in large productions by heavyduty and high precision processing work.

V.Accuracy within 0.005mm.and long life usage.